My timing belt was blown on my Jetta TDI, 97, the other week. It has a little over 97K on it. The mechanic said it did some engine damage. I believe he said it hit the pistons. He said he can get it started, but it doesn't stay running. Any advise on what I should do? Any ideas how much this costs to fix? Any other advise related to this problem is muchly appreciated. Thanks!